نتایج جستجو برای: 1 d box model

تعداد نتایج: 4812251  

Journal: :Mathematical Methods in the Applied Sciences 2010

Journal: :International Journal of Modern Physics A 2018

Journal: :Czechoslovak Journal of Physics 2005

2014
Shengmao Fu Ji Liu

This paper deals with a Neumann boundary value problem for a Keller-Segel model with a cubic source term in a d-dimensional box (d = 1, 2, 3), which describes the movement of cells in response to the presence of a chemical signal substance. It is proved that, given any general perturbation of magnitude δ, its nonlinear evolution is dominated by the corresponding linear dynamics along a finite n...

2016
Ahmed Salim Asmaa Ahmed Badran

7 3 5 4 | P a g e N o v e m b e r 2 0 1 6 w w w . c i r w o r l d . c o m A comparative study of chain based routing algorithms in wireless sensor networks Ahmed Salim, Asmaa Ahmed Badran (1) Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, P. O. Box 44519, Egypt. Department of Mathematics, Faculty of Science and Arts, Al-mithnab, Qassim University, P. O. Box 931, Bur...

Journal: :Molecular and cellular biology 2002
Nicholas J Watkins Achim Dickmanns Reinhard Lührmann

The 5' stem-loop of the U4 snRNA and the box C/D motif of the box C/D snoRNAs can both be folded into a similar stem-internal loop-stem structure that binds the 15.5K protein. The homologous proteins NOP56 and NOP58 and 61K (hPrp31) associate with the box C/D snoRNPs and the U4/U6 snRNP, respectively. This raises the intriguing question of how the two homologous RNP complexes specifically assem...

Journal: :Cell 2000
Nicholas J Watkins Véronique Ségault Bruno Charpentier Stephanie Nottrott Patrizia Fabrizio Angela Bachi Matthias Wilm Michael Rosbash Christiane Branlant Reinhard Lührmann

The box C/D snoRNAs function in directing 2'-O-methylation and/or as chaperones in the processing of ribosomal RNA. We show here that Snu13p (15.5 kD in human), a component of the U4/U6.U5 tri-snRNP, is also associated with the box C/D snoRNAs. Indeed, genetic depletion of Snu13p in yeast leads to a major defect in RNA metabolism. The box C/D motif can be folded into a stem-internal loop-stem s...

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